String versus listing of strings in CloudFormation templates
Generally the values it’s essential present to a property in a CloudFormation template must be a single string, and generally the CloudFormation template property requires an inventory of strings. You possibly can work out which it’s essential present utilizing the CloudFormation documentation for the useful resource you are attempting to create.
In my case I used to be making an attempt to create an IAM Coverage:
The YAML syntax reveals you can go in a bunch to affiliate the coverage with a Group:
Whenever you see a touch in entrance of a String meaning it’s essential go in an inventory of strings. For those who have been utilizing JSON the listing would seem like this:
[GroupName1, GroupName2]
In yaml it appears to be like like this:
- GroupName1
- GroupName2
Even for those who solely must go in a single merchandise it’s essential go it in as an inventory, which in yaml means every worth is preceded by a touch. In json the values are in brackets separated by a comma.
In my case, this:
Assets:batchjobadminuser:Sort: AWS::IAM::PersonProperties:UserName: !Ref usernameparamTeams: !ImportValue groupbatchjobadmins
Grew to become this:
Assets:batchjobadminuser:Sort: AWS::IAM::PersonProperties:UserName: !Ref usernameparamTeams: [!ImportValue groupbatchjobadmins]
Teri Radichel
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